public class char_demo {
    public static  void main(String[] args){
        char a = 'a';
        int b = 2 + a;
        System.out.println(b);
        char c = (char)b;//强转
        System.out.println(c);
        //循环a-z
        for (int k = 0;k<26;k++){
            char tem = (char)(a+k);
            System.out.print(tem);
        }
    }
}
